212,819 Illinois businesses, checked and ready.
Illinois businesses from state licences, registries and business listings: the biggest group is clinics & health care. We check every email before anyone is emailed and name the owner where public records show it.
What we hold in Illinois.
| Trade | Businesses | With email | With phone | No website found |
|---|---|---|---|---|
| Clinics & health care | 53,139 | 9,813 | 49,664 | 20,160 |
| Salons & personal care | 41,651 | 16,745 | 34,628 | 11,569 |
| Restaurants & food | 30,808 | 10,970 | 25,852 | 5,051 |
| Contractors & trades | 26,326 | 6,349 | 21,116 | 4,720 |
| Professional services | 24,236 | 5,709 | 18,691 | 3,319 |
| Retail stores | 13,079 | 2,978 | 9,173 | 4,208 |
| Trucking & transport | 5,619 | 2,141 | 5,188 | 1,163 |
| Hotels & lodging | 2,379 | 892 | 1,965 | 286 |
| Wholesale & distribution | 917 | 213 | 417 | 456 |
| Manufacturing | 858 | 199 | 430 | 269 |
| Waste & recycling | 559 | 129 | 522 | 42 |
| Fitness & recreation | 431 | 233 | 310 | 103 |
| Nonprofits | 294 | 78 | 148 | 132 |
| Farms & agriculture | 130 | 46 | 61 | 35 |
Counted 2026-10-08. "No website found" counts only businesses we have already checked.
Where they are.
Businesses in the busiest cities of Illinois. Pick a city in the lead finder to see emails, owners and sample names.
Open the lead finder for Illinois- Chicago 64,080
- Naperville 3,371
- Rockford 2,654
- Springfield 2,370
- Schaumburg 2,296
- Aurora 2,087
- Peoria 2,086
- Arlington Heights 1,790
- Evanston 1,717
- Elgin 1,697
- Joliet 1,684
- Skokie 1,616
What the numbers say.
Illinois has 212,819 businesses in our database, number 8 of 51 (the 50 states and DC). 57,862 of them (27%) have an email on file, which puts Illinois at number 39 for email coverage.
The biggest groups are clinics and health practices (53,139), salons and personal-care businesses (41,651) and restaurants and food businesses (30,808). Email coverage is strongest among fitness and recreation businesses: 54% have one.
We've checked the website of 78,370 Illinois businesses so far; 58,130 (74%) had none, mostly clinics and health practices, then salons and personal-care businesses.
Of all Illinois businesses, 37,840 have a named contact, usually the owner, from licences and property records; 17 were registered in the last 12 months (where the filing date is known).
The biggest cities are Chicago (64,080), Naperville, Rockford and Springfield. The lead finder covers Illinois as a whole and its biggest cities.
Teams that find Illinois leads useful
- Commercial cleaning companies: 77,375 clinics and offices in Illinois
- Web designers: 58,130 checked with no website in Illinois
- Food and beverage suppliers: 30,808 restaurants and food businesses in Illinois
- Commercial insurance agents: 26,326 contractors and trades in Illinois
Illinois leads: common questions
How many Illinois businesses can BeatTheDoor reach?
212,819 businesses are in our Illinois database: 57,862 with an email on file and 170,644 with a phone number. We check each email before anyone is contacted.
Which Illinois cities have the most businesses?
The biggest are Chicago (64,080), Naperville (3,371), Rockford (2,654), Springfield (2,370), Schaumburg (2,296). Pick any of them in the lead finder to see more.
Can I target one city or trade in Illinois?
Yes. A campaign is a trade and an area, down to a list of cities or ZIP codes, for example clinics and health practices in Chicago. Your leads are yours alone in that area.